Granted Patent
Utility
US 4,299,328 · App. 06/134,173
Tamperproof bottle closure cap
Inventors:
Charles S. Ochs, Carl E. Koontz
Patented Case
View Patent ↗
Granted: Nov 10, 1981
Filed: Mar 26, 1980
Inventors
Charles S. Ochs
Carl E. Koontz
Assignee (at issue)
ANCHOR HOCKING, LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.